<p><br />
a_b_40%25_x_y</p>
<p><br /></p>
<p><a class="externallink" rel="nofollow" href="http://example.com/wiki/en/Test_Topic">http://example.com/wiki/en/Test_Topic</a></p>
<p>/wiki/en/Test_Topic</p>
<p>a_b+40%25+x+y</p>
<p>abcde fg</p>
<p>aBcDe Fg</p>
<p>ABCDE FG</p>
<p>ABcDe Fg</p>
